Fence Post Plastic WHITE Decorative FencePost Caps 6X6 (5 5/8 X 5 5/8)Pressure Treated Wood Made In USA Fence Post Plastic WHITE Caps 6X6 (5 5/8 X 5 5/8)Pressure Treated Wood Made In USA Cap should be pre-drilled if you are going to secure with a nail. EXACT INSIDE DIMENSION OF THIS CAP IS (5 5/8" X 5 5/8") MADE IN THE U.S.A. Free Shipping